Improvement in saw-dressing machine



anca sata peut can.

JOHN MLLORY, 0F PENN YAN, NEW YORK.

Letters Patent No. 107,270, dated September 13, 187.

The Schedule referred to in these Letters Patent and making part of the sauneA 1', J oHN MALLoIir, of lcun Yan, in the county of Yates and State of New York, have invented certain Improvements in Saw-dressing Machines, of which the following is a specification.

The first part of my invention relates to the coinbination of a revolving cutter, made of cornndum, wit-h an adjustable frame, provided with wheels to rnn the cutter, audadjustablc stops and springs to cause the cutter to dress a saw'u a line or circle.

vThe second part relates to placing the spindle of the cutter in a circular frame, that may be adjusted so that the cutter will dress a tooth with any angle and bevel necessary for the various kinds of saws or sawing that is to be done.

Figure l is a top view;

Figure 2, a side elevation; and

Figure 3, a top view of the base ot' the frame, and one of the supports.

A is the main frame, that supports the other parts. It may be made of cast-iron, and shaped, as shown infig. 3, with two upright posts, a, of sufficient length to hold the frame B.v These -posts a have holes in them for the pivots of the frame l5. rlh'e posts are made at right angles with the base, with holes through them to fasten them to suitable uprights or posts, and the base has holes for bolts that may be used to fasten it to a tablel or other horizontal place to which it may be fastened. 1S is an adjust-able'iianic that holds the drivingwheels. Its shape is represented in lig. 2.

It is provided with pivots l) at the outer sido and end of each branch. A

These pivots areput in the holes in'the upper end of the posts a of the ii'ainc A, and nearly central with these pivots arc journal-boxes c for'thc driving-wheel shaft, so that the wheels may be held in the position represented in iig. 1.

At the other end of the frame is a chalnbcred circular plate, d, that is made to receive and hohl 'a circular plate, c, that is made on the segmental support C, as shown in fig. 1, and a' horizontal section is shown in fie. 3.

C is a segmental support for the frame 1), that holds the cutter-spindle. Its shape is' represented in iig. 3. y

It is provided with a circular plate, e, that is fitted into the circular plate d on the frame and is held in place by an annular rim, f, that is fastened to the plate d on the frame B with screws or bolts, so that it may be held as firmly as desired.

1t also has a circular projection, g, on the inside c the circle. as shown in tig. 3, for a plate and thumbscrew to hold the spindle-frame I) to it, and allow it to bc turned sutiicient to cut theproper bevel to the saw-tooth. It may be turned by the operator, o r be actuated by an inclined bar that is placed underneath it to give it the proper turn to ent the tooth the angle 'or shape required.

operator to cut the required bevel to the edge ot' the t saw-tooth. AThis fralne may be turned by the operator as much as required, and then may bc held by a thumb-screw, so that the cut-ter will cut all vteeth the saine bevel. Y

ll is the circular cutter. ,It may be made any size or thickness required, and of any material that will cut steel saw-blades', and it may be put on either end ofthe spindle preferred. Besides its rotary cutting motion, it may be moved three other ways: one up and down, to bring it tothe saw; -one by turning to the right or left, to cnt thc required angle, and one circular, by turning the frame, to cause it to cut the teethl the required bevel.

11 is a grooved pulley that is fastened on the cuttei'-, spindle, as shown in iigs. 1 and 2.. The groove should bc made larger and deeper than ordinary, so that it will hold a band, when the frame Dis turned, sut'- ieiently to cut the required bevel; it is driven by a band from the wheel'G, as shown in lio. 1.

G isa grooved band-wheel that drives the cutter- It is provided with pulleys, i, at each side, of different sizes, as shown in iig. 2, so Athat its speed may be varied as required. It is driven by a band from any convenient motive power.

Il is an ad j ustable stop. It is made to pass through the frame B, and rest upon. the base of the frame A, as shown in fig. 1. It is adjusted by having a screw on the upper end, fitted into thc frame, or by a nut above and one bclowthe frame.

I is a support for the frame lyand is made to hold it up, so that thc cutter will be above the saw while adjusting it. This support is made of a piece ot'ronnd i iron. lhe lower end is fastened into the base of the frame A, and has a screw andnut at t-he lower end. that is used to raise the coiled spring, so thatit will raise the cutter the proper height. A coiled spring is put on the round iron, between the nut and under side of'the fralnc B, and the round iron extends up through the i'ame, as shown in liv'. 1. If necessary, more than one may be used.

J is a rectangular bar of iron, placed underneath the frame C, as shown iu figs. 1 and 3. Its use is to actuate and stop the frame C; it is held in posit-ion b v two posts, K, by being pivoted in .their upper ends.

K in iig. l is a post that holds one end ot' the bar J. A corresponding post holds the other'cnd. The upper end of each post is branched, and has a pivot through it and the bar. The lower end passes down through the short branch of' the base ot' the frame A, and each post is provided with a nut that may be used tol-aise or lower them, so that the bar may be adjusted to any angle required.

That I claim as myinvent-ion, and desire to secure by Letters Patent, is- 

